WO2004074695A2 - Automated monitoring for clinching joints - Google Patents
Automated monitoring for clinching joints Download PDFInfo
- Publication number
- WO2004074695A2 WO2004074695A2 PCT/US2004/004529 US2004004529W WO2004074695A2 WO 2004074695 A2 WO2004074695 A2 WO 2004074695A2 US 2004004529 W US2004004529 W US 2004004529W WO 2004074695 A2 WO2004074695 A2 WO 2004074695A2
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- punch
- die
- sensor device
- joint
- advancement
- Prior art date
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D39/00—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders
- B21D39/03—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders of sheet metal otherwise than by folding
- B21D39/031—Joining superposed plates by locally deforming without slitting or piercing
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49764—Method of mechanical manufacture with testing or indicating
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/53—Means to assemble or disassemble
- Y10T29/53022—Means to assemble or disassemble with means to test work or product
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/53—Means to assemble or disassemble
- Y10T29/53039—Means to assemble or disassemble with control means energized in response to activator stimulated by condition sensor
- Y10T29/53061—Responsive to work or work-related machine element
- Y10T29/53065—Responsive to work or work-related machine element with means to fasten by deformation
Definitions
- This invention is concerned with clinched joints, and more particularly, with automated monitoring of clinching to ensure the quality of clinched joints, including, but not limited to, the quality of button diameter and button bottom thickness .
- clinched joints in which the operation of a punch relative to a die deforms contiguous metal sheets in a manner that produces a joint button interlocking the sheets.
- One form of clinching apparatus uses a die having die segments that are displaced laterally relative to a die anvil during formation of a joint. See, e.g., U.S. Patent Nos. 5,150,513 issued September 29, 1992 and 5,581,860 issued December 10, 1996. While such clinching apparatus is capable of making excellent clinched joints, there are occasions when the joints are unacceptable, because, for example, the bottom of the joint button is too thin.
- the present invention provides a system for monitoring the performance of clinching apparatus of the type just described, for determining whether clinched joints are acceptable or unacceptable, and for determining whether wear of the punch and/or die is excessive.
- the invention monitors button diameter and amount of punch advancement in forming a joint, correlates acceptable values of each, indicates when an unacceptable joint has been produced, and indicates when wear of punch and/or die has become excessive .
- Figure 1 is a diagrammatic view, partly in section, illustrating one embodiment of clinching apparatus with monitoring components
- Figure 2 is a fragmentary enlarged sectional view showing a portion of the apparatus of Fig. 1;
- Figure 3 is a view similar to Fig. 2, but illustrating different monitoring components ;
- FIG. 4 is a simplified block diagram of monitoring apparatus in accordance with the invention.
- Figure 5 is a flow chart showing the manner in which clinched joint monitoring can be performed in accordance with the invention.
- Fig. 6 is a similar flow chart for another embodiment.
- a machine or apparatus suitable for implementing the invention may comprise a C- Frame, an Actuating Assembly (actuator) mounted on the C- Frame, a Forming Punch supported on the C-Frame for reciprocative movement in a Retaining Sleeve toward and away from a Joint Forming Die (see Fig. 2) and a Controller (see Fig. 4) preferably including a microprocessor.
- the Actuating Assembly mounted on the C-Frame is powered by an electrical servo motor, and transfers rotational motion of a planetary roller screw into linear motion of the joint Forming Punch.
- U.S. Patent 6,502,008 issued December 31, 2002 discloses an example of an actuating assembly suitable for use in the present invention.
- the control of button diameter utilizes a sensor device including individual proximity switch sensors that sense displacement of pivoting die segments (e.g. three die segments equally spaced circumferentially) that cooperate with the die anvil and the punch in forming a clinched joint by which work pieces (e.g. , sheets of metal) are joined.
- the proximity switches more generally sensors , sense displacement of the associated die segments.
- the controller (more particularly, the microprocessor thereof) receives information from the die segment sensor device and controls the punch actuator, which controls the movement of the punch. As the clinching process proceeds and the punch advances toward the die, the die segments are moved outwardly, i.e., laterally relative to the die anvil .
- Fig. 2 shows, in greater detail, the formation of the button by the cooperation of the punch, the die anvil and the die segments, which are biased inwardly toward the die anvil by springs or other resilient means between the die segments and a die retaining sleeve.
- the microprocessor can be used to control the amount of punch movement toward the die, by, e.g., controlling the number of rotations of a servo motor which powers the actuator, in order to control the button bottom thickness.
- the processor can store information representative of a predetermined range of acceptable button bottom thickness .
- the punch actuator supplies such information to the controller. If the punch advances more than a predetermined amount in forming the button, meaning that the button bottom is too thin, this will indicate that the punch and/or the die are worn and need to be replaced.
- Fig. 3 shows an embodiment in which a circular force (pressure) sensor is used to sense displacement of the die segments .
- the spring or springs used in each embodiment may be of any appropriate well-known type, such as coil springs , leaf springs, or wave springs .
- the sensor may be piezoelectric, for example.
- Appropriate displacement sensors can include electrical , magnetic, optical, mechanical, and electro-mechanical sensors, for example.
- Software employed in a microprocessor of the controller can be designed so that actuation of any one sensor or any combination of sensors can be used to cut off the punch drive.
- Proximity switches have an on-off operating characteristic, but other sensors may have an operating characteristic that varies continuously or in discrete steps .
- Time delay between actuations of sensors can be used as a basis or control also .
- the need for punch/die replacement due to wear can depend upon a predetermined number of clinching cycles in which inappropriate button diameters and/or bottom thickness are detected.
- the controller can store information representative of a predetermined range of acceptable button diameters, as well as information representative of a predetermined acceptable range of punch movement. If the punch has to move consistently (within a predetermined number of clinching cycles "X") either more or less than the predetermined range of acceptable punch movement, for the button to reach its predetermined range of acceptable diameter, this will indicate that the punch and/or die are worn out, and that joints need to be examined.
- Fig. 5 is a self-explanatory flowchart illustrating the manner in which a monitoring system of the invention can perform the functions just described.
- a button is indicated to be "not o.k.” that joint can be checked individually, or joints can be checked as a group after a predetermined number of buttons have been indicated to be not o.k.”.
- the controller can direct the actuator to advance the punch and then to stop when the punch advancement is within a predetermined range of acceptable punch advancement, and the output of the sensor device at that time can be used to determine whether the button is within a predetermined range, and hence whether the joint is acceptable.
- a sensor device having outputs that vary continuously or in discrete steps is particularly appropriate for determining button diameter.
- the controller correlates the size of the button of the clinched joint with the amount of punch advancement in producing the joint and determines from such correlation whether the joint is acceptable.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Forging (AREA)
- Bending Of Plates, Rods, And Pipes (AREA)
- Automatic Assembly (AREA)
- Length Measuring Devices With Unspecified Measuring Means (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/544,932 US7658089B2 (en) | 2003-02-14 | 2004-02-13 | Automated monitoring for clinching joints |
US12/701,951 US7905127B2 (en) | 2003-02-14 | 2010-02-08 | Automated monitoring for clinching joints |
US13/047,216 US8424351B2 (en) | 2003-02-14 | 2011-03-14 | Automated monitoring for clinching joints |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US44728403P | 2003-02-14 | 2003-02-14 | |
US60/447,284 | 2003-02-14 |
Related Child Applications (3)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US10/544,932 A-371-Of-International US7658089B2 (en) | 2003-02-14 | 2004-02-13 | Automated monitoring for clinching joints |
US11/544,932 Continuation US20070160075A1 (en) | 2005-10-10 | 2006-10-10 | Device, system and method of communicating between a bus controller and one or more remote terminals |
US12/701,951 Division US7905127B2 (en) | 2003-02-14 | 2010-02-08 | Automated monitoring for clinching joints |
Publications (2)
Publication Number | Publication Date |
---|---|
WO2004074695A2 true WO2004074695A2 (en) | 2004-09-02 |
WO2004074695A3 WO2004074695A3 (en) | 2005-06-23 |
Family
ID=32908419
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/US2004/004529 WO2004074695A2 (en) | 2003-02-14 | 2004-02-13 | Automated monitoring for clinching joints |
Country Status (2)
Country | Link |
---|---|
US (3) | US7658089B2 (en) |
WO (1) | WO2004074695A2 (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103736872A (en) * | 2013-12-20 | 2014-04-23 | 吴江市震宇缝制设备有限公司 | Misfeed-preventing and automatic correcting device |
WO2018036931A1 (en) * | 2016-08-23 | 2018-03-01 | Tox Pressotechnik Gmbh & Co. Kg | Die and joining device |
WO2018036932A1 (en) * | 2016-08-23 | 2018-03-01 | Tox Pressotechnik Gmbh & Co. Kg | Die and device for positioning a joining element or for clinch joining |
DE102009024335B4 (en) * | 2009-06-09 | 2021-02-04 | Knipping Verbindungstechnik Gmbh | Fastening screw and its use and a method for monitoring the quality of the screw connection and a connection unit |
CN116351961A (en) * | 2023-03-28 | 2023-06-30 | 泰兴市唯艺传媒广告有限公司 | Processing device for metal support of advertisement exhibition rack |
Families Citing this family (11)
Publication number | Priority date | Publication date | Assignee | Title |
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FR2889978B1 (en) * | 2005-08-31 | 2008-10-17 | Adiapress Sarl | DEVICE FOR MOUNTING PUNCHES WITH INSERT, IN PARTICULAR FOR A MACHINE USING THE TRANSFORMATION OF ADIABETIC ENERGY |
CN101310890A (en) * | 2007-05-25 | 2008-11-26 | 托克斯冲压技术两合公司 | Press connecting method and press |
US7997190B2 (en) * | 2007-09-14 | 2011-08-16 | Pem Management, Inc. | Dual force ram drive for a screw press |
US8757558B2 (en) * | 2007-12-17 | 2014-06-24 | Mp Husky, Llc | Cable tray |
EP2517804B1 (en) * | 2008-06-27 | 2013-11-20 | Attexor Clinch Systems S.A. | Spring element for tools making joints of clinch type |
DE102010037534A1 (en) * | 2010-09-14 | 2012-03-15 | Thyssenkrupp Steel Europe Ag | Apparatus and method for producing at least partially closed hollow profiles with rotatable die halves and low cycle time |
US20130043538A1 (en) * | 2011-08-16 | 2013-02-21 | Chao-Cheng Lu | Switch |
US9027220B2 (en) | 2012-08-07 | 2015-05-12 | Newfrey Llc | Rivet setting machine |
CN104438889B (en) * | 2014-10-24 | 2017-01-18 | 安徽启光能源科技研究院有限公司 | Automatic rivet disengaging device for rivetless riveting device and rivet disengaging method thereof |
US10338032B2 (en) | 2016-11-22 | 2019-07-02 | Gm Global Technology Operations Llc. | Automated quality determination of joints |
CN113458259A (en) * | 2021-09-03 | 2021-10-01 | 浙江易锻精密机械有限公司 | Punch assembly and punch wear degree detection method |
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US20020166221A1 (en) * | 2001-05-05 | 2002-11-14 | Henrob Limited | Fastener insertion apparatus and method |
US6789309B2 (en) * | 2000-02-22 | 2004-09-14 | Newfrey Llc | Self-piercing robotic rivet setting system |
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US5487215A (en) | 1994-02-18 | 1996-01-30 | Multifastener Corporation | Self-adjusting head |
US5615474A (en) | 1994-09-09 | 1997-04-01 | Gemcor Engineering Corp. | Automatic fastening machine with statistical process control |
WO1998013156A1 (en) | 1996-09-27 | 1998-04-02 | General Electro Mechanical Corporation | Control system and method for fastening machines |
US6240626B1 (en) | 1997-02-21 | 2001-06-05 | Novopress Gmbh Pressen Und Presswerkzauge & Co. Kg | Pressing device |
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DE19812133A1 (en) * | 1998-03-20 | 1999-09-23 | Baltec Maschinenbau Ag | Method of controlling, monitoring and checking shaping process of shaping machine, especially a riveting machine |
US6067696A (en) * | 1998-04-08 | 2000-05-30 | Dimitrios G. Cecil | Quality control system for a clinching station |
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-
2004
- 2004-02-13 WO PCT/US2004/004529 patent/WO2004074695A2/en active Search and Examination
- 2004-02-13 US US10/544,932 patent/US7658089B2/en active Active
-
2010
- 2010-02-08 US US12/701,951 patent/US7905127B2/en not_active Expired - Lifetime
-
2011
- 2011-03-14 US US13/047,216 patent/US8424351B2/en not_active Expired - Fee Related
Patent Citations (4)
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US20010027597A1 (en) * | 1997-07-21 | 2001-10-11 | Dieter Mauer | Riveting system and process for forming a riveted joint |
US6502008B2 (en) * | 1997-07-21 | 2002-12-31 | Newfrey Llc | Riveting system and process for forming a riveted joint |
US6789309B2 (en) * | 2000-02-22 | 2004-09-14 | Newfrey Llc | Self-piercing robotic rivet setting system |
US20020166221A1 (en) * | 2001-05-05 | 2002-11-14 | Henrob Limited | Fastener insertion apparatus and method |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102009024335B4 (en) * | 2009-06-09 | 2021-02-04 | Knipping Verbindungstechnik Gmbh | Fastening screw and its use and a method for monitoring the quality of the screw connection and a connection unit |
CN103736872A (en) * | 2013-12-20 | 2014-04-23 | 吴江市震宇缝制设备有限公司 | Misfeed-preventing and automatic correcting device |
CN103736872B (en) * | 2013-12-20 | 2016-05-18 | 吴江市震宇缝制设备有限公司 | A kind of anti-misdelivery and self-checking device |
WO2018036931A1 (en) * | 2016-08-23 | 2018-03-01 | Tox Pressotechnik Gmbh & Co. Kg | Die and joining device |
WO2018036932A1 (en) * | 2016-08-23 | 2018-03-01 | Tox Pressotechnik Gmbh & Co. Kg | Die and device for positioning a joining element or for clinch joining |
CN116351961A (en) * | 2023-03-28 | 2023-06-30 | 泰兴市唯艺传媒广告有限公司 | Processing device for metal support of advertisement exhibition rack |
CN116351961B (en) * | 2023-03-28 | 2023-11-17 | 泰兴市唯艺传媒广告有限公司 | Processing device for metal support of advertisement exhibition rack |
Also Published As
Publication number | Publication date |
---|---|
US7905127B2 (en) | 2011-03-15 |
US20110162184A1 (en) | 2011-07-07 |
US20060243013A1 (en) | 2006-11-02 |
WO2004074695A3 (en) | 2005-06-23 |
US8424351B2 (en) | 2013-04-23 |
US20100139349A1 (en) | 2010-06-10 |
US7658089B2 (en) | 2010-02-09 |
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